Shortest prediction intervals for the birnbaum-saunders distribution

Shortest prediction intervals for a future observation from the Birnbaum-Saunders distribution are obtained from both frequentist and Bayesian perspectives. Comparisons are made with alternative intervals obtained via inversion. Monte Carlo simulations are performed to assess the approximate intervals.     

A brief proof on the generalized variance bound of the relative efficiency in statistics

In this paper, we obtain a brief proof on the generalized varance bound of the relative efficiency that was simultaneously given by Bloomfield and Watson(1975) and by Knott (1975).     

制造业效率区域差异及其影响因素分析——基于中国省级面板数据的研究

制造业的发展关系到第二产业乃至整个国民经济的发展,制造业的增长是中国工业经济增长的主导力量。本文运用数据包络分析法,测度了制造业各行业及中国各省制造业效率情况,然后利用中国省级制造业效率指标以及专利申请、地区经济发展水平等制造业效率影响因素的外延数据构成面板数据（Panel Data）建立模型。通过实证分析得出：地区经济的发展有利于制造业效率的提升。专利申请与制造业效率呈负相关。     

Quasi-minimax estimation in the general linear regression model

This paper is mainly concerned with minimax estimation in the general linear regression model y=Xβ+ε$y=X\beta +\epsilon$ under ellipsoidal restrictions on the parameter space and quadratic loss function. We confine ourselves to estimators that are linear in the response vector y  . The minimax estimators of the regression coefficient β$\beta$ are derived under homogeneous condition and heterogeneous condition, respectively. Furthermore, these obtained estimators are the ridge-type estimators and mean dispersion error (MDE) superior to the best linear unbiased estimator b=(X^′W^-1X)^-1X^′W^-1y$b=(X^{\prime }{W}^{-1}X{)}^{-1}{X}^{\prime }{W}^{-1}y$ under some conditions.     

De-aliasing effects using semifoldover techniques

Semifoldover designs, obtained by semifolding a regular two-level factorial design, have been discussed recently in the literature. In this article, with the use of indicator functions, we investigate various semifoldover designs that are obtained from a general two-level factorial design. We discuss when a main factor or a two-factor interaction can be de-aliased from their aliased two-factor interactions, and extend some of the existing results from regular designs to non-regular designs. Finally, we present some examples to illustrate the results developed here.     

Nonparametric Tests for Stratum Effects in the Cox Model

Thispaper considers the stratified proportional hazards model witha focus on the assessment of stratum effects. The assessmentof such effects is often of interest, for example, in clinicaltrials. In this case, two relevant tests are the test of stratuminteraction with covariates and the test of stratum interactionwith baseline hazard functions. For the test of stratum interactionwith covariates, one can use the partial likelihood method (Kalbfleischand Prentice, 1980; Lin, 1994). For the test of stratum interactionwith baseline hazard functions, however, there seems to be noformal test available. We consider this problem and propose aclass of nonparametric tests. The asymptotic distributions ofthe tests are derived using the martingale theory. The proposedtests can also be used for survival comparisons which need tobe adjusted for covariate effects. The method is illustratedwith data from a lung cancer clinical trial.     

简论中国古代的环境伦理思想

中国古代环境伦理思想的哲学基础是天人统一观 ,尊重生命 ,兼爱万物是这一伦理思想的主题。寡欲节用是中国古代珍惜自然资源的传统美德。中国古代就已形成了渗透环境伦理意识的政法理念。不同于西方传统伦理学所奉行的人类中心主义 ,中国先哲主张保持人和自然关系的和谐统一。作为珍贵的文化遗产 ,中国古代环境伦理思想是保证和维护中华民族几千年生存繁衍和中华文明绵延不断的重要因素之一 ,它对现代环境伦理学的发展也具有重大的理论借鉴价值。在当前现代化建设中 ,有分析地借鉴我国古代的环境伦理思想 ,对创建适合我国国情的环境伦理学 ,解决社会可持续发展问题是极有意义的     

“边缘化”大学生个体成因、预防与矫治的研究

＂边缘化＂学生是指行为超出正常规范、学业严重不佳的学生个体。认为中学及大学阶段的管理、社会因素、理想与现实的错位以及个人性格心理特点等是形成＂边缘化＂学生个体的主要原因;管理者建立＂防边缘化＂预警机制、抓住管理的关键时期及努力营造良好学风是有效预防＂边缘化＂的措施;选择适当的角度和有效的工作方法可以对＂边缘化＂学生完成成功矫治。     

中国特色城镇化:学术内涵、实践探索和理论认识

本文回顾了中国特色城镇化的学术起源,并给出了一般性的界定;结合城镇化的实践探索,诠释了中国特色城镇化的独特内涵,即中国特色城镇化是外生与内生的统一,具有渐进性、多样性、协调性和人本性.中国特色城镇化不同于其他国家的发展模式,促使我们反思如何正确认识和处理政府与市场关系、府际关系、产城关系.     

瑞典创新模式的历史特征分析

工业革命之后,瑞典结合“人民之家”政治理念与自由主义经济政策,最终创造出了“瑞典模式”.但是,20世纪90年代以来,随着瑞典经济发展出现下滑,这一模式逐渐衰落.这一模式的成功创建与其创新治理模式密切相关,瑞典模式能否复兴则取决于瑞典创新治理模式的有效性.瑞典经济史、技术史领域多种迹象显示出瑞典模式正在复活.